3-DIMENSIONAL DIAGRAMS OF THE REGIONS OCCUPIED BY INDUCED ANGER STATES IN A MULTIDOMAIN MAGNETIC MEDIUM

The regions of existence of Anger states in an iron garnet film are pl otted and investigated for the first time in a space of three controll ing parameters: the frequency and amplitude of the alternating field a nd the magnitude of the static bias field. It is shown that the dynami c spiral domains differ significantly in their configuration and prope rties in different regions. A quantitative parameter involving the vel ocity of the domain walls and the ''looseness'' (sparseness) of the dy namic array of magnetic domains is introduce to characterize the favor ability of conditions for the formation of spiral domains. (C) 1998 Am erican Institute of Physics. [S1063-7834(98)02010-3].